منابع مشابه
Enantiomeric natural products: occurrence and biogenesis.
In nature, chiral natural products are usually produced in optically pure form-however, occasionally both enantiomers are formed. These enantiomeric natural products can arise from a single species or from different genera and/or species. Extensive research has been carried out over the years in an attempt to understand the biogenesis of naturally occurring enantiomers; however, many fascinatin...
متن کاملAntimalarial natural products: a review
Objective: Malaria is an infectious disease commonplace in tropical countries. For many years, major antimalarial drugs consisted of natural products, but since 1930s these drugs have been largely replaced with a series of synthetic drugs. This article tries to briefly indicate that some plants which previously were used to treat malaria, as a result of deficiencies of synthetic drugs, have rev...
متن کاملEvaluation of Natural Products
Crude extracts from Warburgia ugandensis Sprague, Azadirachta indica, Tagetes minuta and Urtica massaica have been tested against soil pathogens; Fusarium oxysporum, Alternaria passiflorae and Aspergillus niger. The results obtained showed biological activity against these pathogens except for U. massaica extract, which was not active. Separation of the crude extract from W. ugandensis yielded ...
متن کاملThe future role of natural products in health care
For thousands of years, one of our many gifts from the Earth has been medicines to treat a myriad of ailments. In the developed world, approximately 25% of prescription products are derived from higher plants, and in the developing world, over 80% of the population relies on plants, in the form of traditional medicine, for their primary health care. In 2050, the Earth will have a population of ...
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ژورنال
عنوان ژورنال: Nature
سال: 1957
ISSN: 0028-0836,1476-4687
DOI: 10.1038/180679a0